<body md-src-pos="0..37"><pre class="code-fence" md-src-pos="0..37"><div class="code-fence-highlighter-copy-button" data-fence-content="ZGVmIGZvbyh4KQogIHJldHVybiAzCmVuZA==">
  <img class="code-fence-highlighter-copy-button-icon">
  <span class="tooltiptext">Copy to clipboard</span>
</div><code class="language-ruby" md-src-pos="0..37"><span md-src-pos="0..8"/><span md-src-pos="8..19">def foo(x)
</span><span md-src-pos="19..30">  return 3
</span><span md-src-pos="30..34">end
</span><span md-src-pos="34..37"/></code></pre></body>